WASHINGTON (Reuters) – A U.S. Senate panel voted unanimously on Thursday to seek trade or other sanctions against Russia or any other country that offers asylum to former spy agency contractor Edward Snowden, who has been holed up for weeks at a Moscow airport.

The 30-member Senate Appropriations Committee adopted by consensus an amendment to a spending bill that would direct Secretary of State John Kerry to meet with congressional committees to come up with sanctions against any country that takes Snowden in.

Snowden is wanted by the United States on espionage charges for revealing details of government intelligence programs. He arrived in Moscow on June 23 from Hong Kong, where he had fled to escape capture and trial in the United States.

He has asked for temporary asylum in Russia until he can reach a country that will shelter him, but U.S. authorities have made clear they will be deeply disappointed if Russia lets the fugitive leave the airport.